org.glassfish.pfl.dynamic.codegen.spi
Interface ModifiableFieldReference

All Superinterfaces:

FieldInfo, MemberInfo

public interface ModifiableFieldReference
extends FieldInfo

Nested Class Summary

static class

ModifiableFieldReference.ReferenceType

Method Summary

void	complete() Mark the end of the code generation to replace the field reference.
FieldInfo	field()
ModifiableFieldReference.ReferenceType	getReferenceType()
Variable	getTargetObject() Return an expression that can be used to access the target object, if !Modifier.isStatic(field().modifiers()).
Variable	getValue() Return an expression that can be used to access the field value.
MethodInfo	method()
void	replace() After this call, the field reference will not be emitted.

Methods inherited from interface org.glassfish.pfl.dynamic.codegen.spi.FieldInfo

type

Methods inherited from interface org.glassfish.pfl.dynamic.codegen.spi.MemberInfo

isAccessibleInContext, modifiers, myClassInfo, name

Method Detail

method

MethodInfo method()

field

FieldInfo field()

getReferenceType

ModifiableFieldReference.ReferenceType getReferenceType()

getTargetObject

Variable getTargetObject()

Return an expression that can be used to access the target object, if !Modifier.isStatic(field().modifiers()). This variable refers to the target object available before the set or get of the field. If the field is static, this returns null.

getValue

Variable getValue()

Return an expression that can be used to access the field value. If getReferenceType()==GET, this variable must be set to the value returned by the reference. If getReferenceType()==SET, this variable contains the value to be stored by the reference.

replace

void replace()

After this call, the field reference will not be emitted. Instead, any sequence of Wrapper calls valid in a method body may be used to generate replacement code for the field reference. As an example, the following code would cause equivalent code to the original reference to be emitted, in the case of a non-static field:

 Variable target = mf.getTargetObject() ;
 Variable value = mf.getValue() ;
 String name = field().name() ;

 // For getReferenceType() == GET:
 _assign( value, _field( target, name ) ) ;

 // For getRerenceType() == SET:
 _assign( _field( target, name ), value ) ;

 

complete

void complete()

Mark the end of the code generation to replace the field reference.